Fair Value Measurements - Impaired Assets, Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Investments in single-family residential properties, net held for use and held for sale impairment adjustments
Total impairments	$ (289)	$ (3,960)	$ (4,202)	$ (11,289)
Fair Value, Measurements, Nonrecurring | Level 3 | Rental Properties
Investments in single-family residential properties, net held for use and held for sale impairment adjustments
Pre-impairment amount	1,800	18,723	19,594	49,837
Total impairments	(289)	(3,706)	(4,113)	(9,217)
Fair value	1,511	15,017	15,481	40,620
Fair Value, Measurements, Nonrecurring | Level 3 | Rental Properties
Investments in single-family residential properties, net held for use and held for sale impairment adjustments
Pre-impairment amount	0	885	451	8,438
Total impairments	0	(254)	(89)	(2,072)
Fair value	$ 0	$ 631	$ 362	$ 6,366